Keep listed published rules public and guest-claim rules unlisted, with semantic document markup and share chrome that stays clickable.

Guest publishes remain share-by-link but stay out of the catalog and sitemap, and their pages send noindex until claimed. The published-rule view now uses heading and list markup matching Markdown export, and top banners sit below the header so Share is not covered.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/publicSitemap.ts

@@ -17,11 +17,13 @@ const STATIC_PUBLIC_PATHS = [
 ] as const;
 
 /**
- * Public marketing URLs for `/sitemap.xml`. Omits signed-in product routes
- * (`/create`, `/login`, `/profile`), admin, and `/rules/[id]` (those ids are
- * not known without the database).
+ * Public marketing URLs for `/sitemap.xml`, plus listed published rules when
+ * the caller supplies them. Omits signed-in product routes (`/create`,
+ * `/login`, `/profile`), admin, and unlisted guest-claim `/rules/[id]`.
  */
-export function buildPublicSitemap(): MetadataRoute.Sitemap {
+export function buildPublicSitemap(
+  listedRules: ReadonlyArray<{ id: string; updatedAt: Date }> = [],
+): MetadataRoute.Sitemap {
   const entries: MetadataRoute.Sitemap = STATIC_PUBLIC_PATHS.map((path) => ({
     url: sitemapUrl(path),
   }));
@@ -38,5 +40,12 @@ export function buildPublicSitemap(): MetadataRoute.Sitemap {
     entries.push({ url: sitemapUrl(`/use-cases/${slug}/rule`) });
   }
 
+  for (const rule of listedRules) {
+    entries.push({
+      url: sitemapUrl(`/rules/${encodeURIComponent(rule.id)}`),
+      lastModified: rule.updatedAt,
+    });
+  }
+
   return entries;
 }